Process of waterproofing twine.



25 and after it has 5 ture during the winding and UNITE s STATES PATENTEnron HARRY FEDER, OF NEW YORK, N. Y. PFiOCESS OF WATERPRQOFHNG TWBNE.

Specification of Letters Patent.

Patented Feb. 20, 1906.

Application filed August 26, 1903. Serial No. 170.800.

1'0 all whom, it may concern:

Be it known that I, HARRY FEDER, a citizen of the United States, and aresident of the borough of Manhattan, in the city and State 5 of NewYork, have invented a new and useful Process for Waterproofing Twine, ofwhich the following is a s ecification.

My invention re ates to a process for weterproofing twine; and itconsists, broadly, in

H treating a flat strip, from which-the twine is p to be formed, with aproduct-such, for example, as caseinbefore the strip is twisted, andsubsequently, after the strip is twisted into twine, treating thetwisted strip or twine .1 with formaldehyde.

In carrying my process into practical effect a strip of material, in thepresent instance paper, is passed through a machine for treating andtwisting the str psuch, for example, as

the machine shown, described, and claimed in Patent N 0. 551,615,granted to George L. Brownell December 17, 1895-andjduring its progress,before it is twisted, it is saturated or treated with a product,

been tightly twisted into twine it is submitted to the action offormaldehyde by passing it through a body of the formaldeyhde, whichacts upon the casein,

converting it into a water and moisture resist-' 3o 111%COII1POUI1Cl.

the pa er is treated with both the casein and formaldehyde before it istwisted, the twisting can not be accomplished in a satisfactory manner,as the strip will resist moistend to unwind such as casein,

and if treated will be external admit moisture.

The casein should be applied to the strip in the form of a solutionwhich is sufliciently thin to permit the strip to pass through it andbecome permeated with it without any considerable superfluous quantityadhering to the surface of the strip as it passes out fi'om thesolution, although the particular consistency of the solution is notimportant and after it is twisted the coating only and liable to crackand may be varied as the porosity of the strip vastrip into a twine,treating the twisted twine with formaldehyde.

In testimony that I claim the foregoing as my invention I have signed myname, in presence of twowitnesses, this 4th day of August, 1903.

RRY FEDER. itnesses:

FREDK. HAYNES, HENRY IEME.

